I'd be rethinking you'd be rethinking he'd be rethinking we'd be rethinking you'd be rethinking they'd be rethinking
Perfect
I should've rethought you should've rethought he should've rethought we should've rethought you should've rethought they should've rethought
V-ing perfect
I should've been rethinking you should've been rethinking he should've been rethinking we should've been rethinking you should've been rethinking they should've been rethinking
Negation
Simple form
I shouldn't rethink you shouldn't rethink he shouldn't rethink we shouldn't rethink you shouldn't rethink they shouldn't rethink
V-ing form
I shouldn't be rethinking you shouldn't be rethinking he shouldn't be rethinking we shouldn't be rethinking you shouldn't be rethinking they shouldn't be rethinking
Perfect
I shouldn't have rethought you shouldn't have rethought he shouldn't have rethought we shouldn't have rethought you shouldn't have rethought they shouldn't have rethought
V-ing perfect
I shouldn't have been rethinking you shouldn't have been rethinking he shouldn't have been rethinking we shouldn't have been rethinking you shouldn't have been rethinking they shouldn't have been rethinking
Interrogative form
Simple form
should I rethink? should you rethink? should he rethink? should we rethink? should you rethink? should they rethink?
V-ing form
should I be rethinking? should you be rethinking? should he be rethinking? should we be rethinking? should you be rethinking? should they be rethinking?
Perfect
should I have rethought? should you have rethought? should he have rethought? should we have rethought? should you have rethought? should they have rethought?
V-ing perfect
should I have been rethinking? should you have been rethinking? should he have been rethinking? should we have been rethinking? should you have been rethinking? should they have been rethinking?
Interro-negative form
Simple form
shouldn't I rethink? shouldn't you rethink? shouldn't he rethink? shouldn't we rethink? shouldn't you rethink? shouldn't they rethink?
V-ing form
shouldn't I be rethinking? shouldn't you be rethinking? shouldn't he be rethinking? shouldn't we be rethinking? shouldn't you be rethinking? shouldn't they be rethinking?
Perfect
shouldn't I have rethought? shouldn't you have rethought? shouldn't he have rethought? shouldn't we have rethought? shouldn't you have rethought? shouldn't they have rethought?
V-ing perfect
shouldn't I have been rethinking? shouldn't you have been rethinking? shouldn't he have been rethinking? shouldn't we have been rethinking? shouldn't you have been rethinking? shouldn't they have been rethinking?